UK Risk Register Details for Herpetogramma licarsisalis

Pest has been archived

This pest has been assessed for the Risk Register and is considered to pose a low risk to the UK. The information on this pest was correct as of 23/10/2017, but is no longer actively maintained. It will only be updated if new information is received which indicates the potential for a significant increase in risk to the UK.

This record was last updated on 21/04/2020

Common Names

  • Grass caterpillar
  • Grass webworm
  • Sod webworm

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Natural spread

Common Pathways

  • show / hide
This section is currently being developed as part of the next phase of the Risk Register.

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 1
Spread [1 - 5] 5
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 2
UK Relative Risk Rating [1 - 125] 10

Current Mitigations

  • show / hide

Key mitigation for pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 1
Spread [1 - 5] 5
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 2
UK Relative Risk Rating [1 - 125] 10

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country Status Notes
Spain Present
United Kingdom Absent
Malta Present
Portugal Present
North America
United States Present (Limited)
Australia Present
Fiji Present
Marshall Islands Present
New Zealand Present (Limited)
French Polynesia Present
Samoa Present
Congo (Democratic Rep.) Present
Egypt Present
Madagascar Present
Reunion Present
Sierra Leone Present
Togo Present
South Africa Present
Bangladesh Present
China Present
Indonesia Present
India Present
Japan Present
Sri Lanka Present
Malaysia Present

Type of Pest

  • Insect (Lepidoptera)

Host or Industry at Risk

  • show / hide


Major Hosts

  • Cynodon dactylon (L.) Pers.
  • Gramineae Adans., Nom. Cons.
  • Lolium perenne L.
  • Oryza sativa L.
  • Pennisetum clandestinum Hochstetter
  • Zea mays L.

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

Further Information

PRA Availability

PRA not available

Regulation and EPPO listing

  • show / hide

Not currently listed

Actions Indicated

  • show / hide


No statutory action against findings.

General Comments

Moth pest of pasture intercepted twice in the UK on produce and also an occasional migrant. No significant risk of entry of establishment.